can't change the legende

tidyverse
1

Hello

I have plotted some data and now I would like to edit the legend. It should no longer have color as title but " Kategorie:" and the content of the legend should also not be 1,2,3... but "weiche Begriffe", "Extremismus", "Demagogie", "Verschwörungen", "Beleidigungen" and "Sexismus". I have already tried the command "scale_fill_discrete", but it just doesn't work. Does anyone have a solution?

ggplot(tabelle, aes(x = Monat)) +
geom_line(aes(y = weiche_Begriffe, color = "1"), linetype = 1, size =2) +
geom_line(aes(y = Extremismus, color = "2"), linetype = 1, size =2) +
geom_line(aes(y = Demagogie, color = "3"), linetype = 1, size =2)+
geom_line(aes(y = Verschwörung, color = "4"), linetype = 1, size =2)+
geom_line(aes(y = Beleidigung, color = "5"), linetype = 1, size =2)+
geom_line(aes(y = Sexismus, color = "6"), linetype = 1, size =2)+
labs(y = "Häufigkeit", title = "Häufigkeiten pro Monat")+
scale_x_continuous(breaks = seq(1,12, by = 1))

2

The easiest option is to reshape your data first:
Pivot data from wide to long — pivot_longer • tidyr (tidyverse.org)

Then you only require one geom_line() in your code and you'll get a legend automatically.

3

Thank you!

I found another way to solve:

ggplot(tabelle, aes(x = Monat)) +
geom_line(aes(y = weiche_Begriffe, color = "1"), linetype = 1, size =2) +
geom_line(aes(y = Extremismus, color = "2"), linetype = 1, size =2) +
geom_line(aes(y = Demagogie, color = "3"), linetype = 1, size =2)+
geom_line(aes(y = Verschwörung, color = "4"), linetype = 1, size =2)+
geom_line(aes(y = Beleidigung, color = "5"), linetype = 1, size =2)+
geom_line(aes(y = Sexismus, color = "6"), linetype = 1, size =2)+
labs(y = "Häufigkeit", title = "Häufigkeiten pro Monat")+
scale_x_continuous(breaks = seq(1,12, by = 1)) ->p

p + scale_colour_discrete(name="Kategorien", breaks=c("1","2","3","4","5","6"),
labels= c("weiche Begriffe","Extremismus","Demagogie",
"Verschwörung","Beleidigung","Sexismus"))

4

That would be the less straightforward way, but if it works for you, that's ok.

5

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